Replace ~/ with ./ for folder references in shelljs.exec() calls.  shelljs.exec always sets the working folder to the same folder as the Gruntfile.js
Replace ~/ with ./ for folder references in shelljs.exec() calls.  shelljs.exec always sets the working folder to the same folder as the Gruntfile.js

cityindex-attic/wordpress-development-flow,easselin/wordpress-development-flow,easselin/wordpress-development-flow,easselin/wordpress-development-flow,easselin/wordpress-development-flow,cityindex-attic/wordpress-development-flow,cityindex-attic/wordpress-development-flow,cityindex-attic/wordpress-development-flow